Here are the Acts and Regulations found in Western Australia related to lone working and work alone employees.
Occupational Safety and Health Act 1984
Division 2 — General workplace duties
19. Duties of employers
(1) An employer shall, so far as is practicable, provide and maintain a working environment in which the employees of the employer the employees) are not exposed to hazards and in particular, but without limiting the generality of the foregoing, an employer shall —
(a) provide and maintain workplaces, plant, and systems of work such that, so far as is practicable, the employees are not exposed to hazards; and
(b) provide such information, instruction, and training to, and supervision of, the employees as is necessary to enable them to perform their work in such a manner that they are not exposed to hazards; and
(c) consult and cooperate with safety and health representatives, if any, and other employees at the workplace, regarding occupational safety and health at the workplace; and
(d) where it is not practicable to avoid the presence of hazards at the workplace, provide the employees with, or otherwise provide for the employees to have, such adequate personal protective clothing and equipment as is practicable to protect them against those hazards, without any cost to the employees; and
(e) make arrangements for ensuring, so far as is practicable, that — (i) the use, cleaning, maintenance, transportation and disposal of plant; and (ii) the use, handling, processing, storage, transportation and disposal of substances, at the workplace is carried out in a manner such that the employees are not exposed to hazards.
Occupational Safety and Health Regulations 1996 Workplace safety requirements
Part 3 General duties applying to workplaces
3.3. Isolated employees to have communication for emergencies etc. If an employee is isolated from other persons because of the time, location or nature of the work then the employer must ensure that —
(a) there is a means of communication available which will enable the employee to call for help in the event of an emergency; and
(b) there is a procedure for regular contact to be made with the employee and the employee is trained in the procedure.